
public class MakeStringUpperCaseLowerCase {
	
	public static void main(String args[]){
	String Upcase="AMAN";
	String Lowcase="aman";
	
	String ch= Upcase.toLowerCase();
	Upcase=ch;
	ch=Lowcase.toUpperCase();
			Lowcase=ch;
    System.out.println(Upcase);
    System.out.println(Lowcase);
	
	

}}
